Mixing-machine.



c. A BUSH.

MIXING MACHINE.

- APPLICATION FILED FEB. 6 1915- RENEWED APR; 3,1913- 1 ,Q 09 Patented June 4,1918.

2 SHEETS-SHEET l.

IA; NUF? W/ TN/Z5555 4 mm? mpg C. A. BUSH.

MIXING MACHINE.

APPuCATIoM FILED FEB. 6. m5. RENEW!!! APR.

Patented June 4, 1918.

2 SHEETS-SHEET 2- EEIAELES AJIBUSH, 0F ()FifiKQSH, WISCONSIN, ASSIG'NOR T0 OSHKOEH MAE !UKEAOTUHIN! COMPANY, 0F OSHROSH, WISCONSIN, A CORPORATIUN GT 'WISCDIYIL...

llIIIXIIil'G-MACHINE.

Specification of Letters ltatent.

Patents d June at; Its-dd.

Application filed February 6, 1915, Serial No. 6&63. Renewed April 8, 1918. Serial Ho. :tftt'fiBU.

To all whom it may concern:

Be it known that I; CHARLES A. BUSH, a citizen of'the United States, and resident of Oshkosh, county of lVinnebago, and State of Wisconsin, have invented new and useful Improvements in Mixing-llhchines, of which the following is a description, reference being had to the accompanying drawings, which are a part of this specification.

The primary object of the invention is to provide, in mixing and analogous machines, an improved form of slop guard in connection or combination with a pivoted charging and discharging chute, the parts being of such construction as to effectually prevent the mixed material from getting into the socket bearings of the pivot pin #for the chute and thereby preventing grinding and undue wearing of the pin and its bearing sockets.

A further object is to provide a device of the character set forth having the above characteristics and at the same time being of such construction that the parts can be Fig. 2 is an end fragmentary view of the interior of the mixer showing the chute in discharging position; Fig. 3 is a sectional view of one end of the mixer, the chute being shown in discharging position in full lines and in charging position in dotted lines.

The improvements maybe attached to the usual form of mixer comprising a mixing drum 4 mounted upon a portable frame 5 and having an end opening 6 therein.

A slop guard comprising two plates 7 al most closes the opening (5 and extends-below the lower edge of said openings The inner edges of the plates from a medial por tion of the edges upwardly are recessed. as indicated by the numerals 8-9. to form a space to accommodate a chute 9. The plates are also provided with flanges ill-10 which fit within the opening 6, and are in close proximity to the bordering edge of said The invention relates to mixing machines.

opening. The inner meeting edges of the plates below the recessed portions thereof are provided with inwardly-projecting clamping flanges 11-11 extending longitudinally of the edges and provided with openings 12 for the reception of bolts 13, whereby the plates are secured together. The plasgs are furthermore provided with fastening lugs 14 projecting outwardly through the opening of the chamber and fastened to uprights 15 of the frame 5 of the machine to secure the guard in position within the opening of the mixing chamber. The inwardly-projccting clamping flanges 11 have extending laterally from the upper ends thereof horizontally-extending concavebearing members 16. the curvatures thereof forming longitudinal recesses 17. Sockets 18, which are alined with each other horizontally, are also formed on the plate 7 and the outer ends of these sockets are closed, as clearly shown in the drawings. The sockets are designed to receive and hold the opposite ends of a pivot pin 19.

The discharge chute 9 comprises a bottom 20, sides 21, the sides of the discharge end of said chute having upwardly extending portions 22 thereon to permit of an eiiicicnt removal of the material from the mixer. A plate 23 is secured to the bottom of said chute and has a lon, it .-udinally extending bearing portion 24 at one end thereof and a plurality of bearing portions 25 adjacent said bearing 24 and oppositely carved with respect thereto. These bearings 24: and 25 are adapted to receive the pin 19 and thereby form a pivotal connection between the chute and the slop guard, the members 16 forming a bearing for the outer sides of the bearings 24 and 25 whereby the, bearings 24 and 25 will be free to turn upon the pin 19 and within the recesses 17 of the members 16.

The means for operating the chute 9 comprises a lever 26 mounted upon a shaft 27 journaled in a bracket 28 mounted upon the frame of the machine and bearings 29 secured to the uprights 1.5. Disposed be tween the bearings 23 and scour .1 the shaft is a sleeve 30 provided lt tl l ing arms 31 forming a yoke and carrying a pin upon which one end ofa lever arm tightly against the opening 6 in the drum,

no slopping will occur.

From the foregoing description of my invention, it will be seen that I provide a slop guard in combination with a pivoted chute, of such arrangement and construction that the pivot pin upon which the chute is adapted to turn has its opposite ends within bearing sockets formed on the inner sides of the two plates forming the slop guard, and as the outer ends otthese bearing sockets are closed, it is' obvious that the drippings which occur, especially while the chamber or drum is revolved, will not clog the bearings or pivot pin, owing to the tact that the drippings of cement cannot enter the bearing sockets. By this arrangement a decided advantage is secured, as thereby Wear and grinding on the bearing sockets and pivot pin are prevented. a i

It will be furthermore seen that in order to provide this form of closed bearing socket for the pivot pin it is important that the slop guard be formed of two plates arranged and connected together as shown in the drawings, and as fully described in the specification. Also, by the provision of the two plates forming the/slop guard the work of assembling the parts together and disassembling the same is greatly facilitated.

In the assembling of the parts the pivot pin is first inserted through the bearings formed by the curved fingers 24 and 25. at

theupper end of the-plate 23. One end of the pin is then inserted intothe bearing socket 18 of one of the plates of the slop guard, and then the other plate of the slop g uard adjusted edgewise toward the first mentioned plate until the opposite end of the pivotpin is received in the other hearing sopket. The two plates are then secured "together by passing the bolts 13 through the apertures '12 of the clamping flanges 11. I The entire structure is now ready to be lifted up to the opening 6 and when tilted the slop guard. and one end of the chute can, be readily passed through the opening 6 and properly positioned within 'aid opening. Finally the securing lugs ll are bolted tothe frame members 15.

vided with a recess extending downwardlyv from its upper edge for a desired distance to form a space, and said slop guard also provided on its inner side with hearing sockets alined horizontally with respect to each other, the outer ends of said sockets being closed, and said slop guard also provided with a horizontally-extending curved bearing surface, means for supporting the slop guard within-the'opening of the chamber, a pivot'pin having its opposite ends fitting in the sockets of the slop guard, a chute extending through the space of the slop guard, bearing portions connected to the under side of the chute, said bearing portions being oppositely curved with re spect to each other and fitting around the pivot pin and received in and bearing upon the horizontally-extending bearing surfaces, and means forv turning the chute on its pivot.

2. In a mixing machine, the combination of a chamber having an opening therein, a slop guard fitting the opening and consisting of two plates, the inner edges of said plates from a medial portion thereof upwardly to the upper ends thereof being recessed to form a space and the inner meeting edges of the plates below the recessed portions thereof being connected together and each plate provided with horizontallyextending concave bearing members, and said plates each provided on its inner side with a socket, the sockets being alined horizontally with respect to each other, and each socket having its outer end closed, means for-supporting the slop guard plates with in the opening of the chamber, a pivot pin having its opposite end fitting in thesockets of the slop guard plates, a chute extend ing through the space formed by the re cessed portions ofthe slop guard plates, bearing portions connected to the under side ofthe chute, said bearing portions being oppositely curved with respect to each other, said oppositely curved bearing portions fitting around the pivot pin, and received in cross-section, a pivot pin having its ends In testimony whereof, I aifix my signasupported in said sockets, and a chute positube, in presence of two Witnesses. tioned in said recess and provided with a CHARLES A. BUSH. bearing portion mounted upon said pin be- Witnesses:

5 tween said sockets in engagement with the F. W. HUELSTER,

bearing surface on the guard. L. C. CROSBY. 

